I am having a heck of a time keeping weight on my almost 2 yr old intact boxer. He eats about 2.5lbs of food a day. As soon as I get him to a decent weight he drops back down. He's not scary thin, just a bit lean for my liking. I live in a cold climate and think he'd be warmer if he had some more meat on him. I could up his food a little but I notice if I overfeed him he gets loose stool. He's been on raw most his life- I tried him on kibble for a short stint but that was TERRIBLE. Maybe more fats in general?